Signatures of dynamical tunneling in semiclassical quantum dots

A. Ramamoorthy, R. Akis, J. P. Bird, T. Maemoto, D. K. Ferry, M. Inoue

Research output: Contribution to journalArticle

Abstract

We study transport in large, and strongly open, quantum dots, which might typically be viewed as lying well within the semiclassical regime. The low-temperature magnetoresistance of these structures exhibits regular fluctuations, with just a small number of dominant frequency components, indicative of the presence of dynamical tunneling into regular orbits. Support for these ideas is provided by the results of numerical simulations, which reveal wave function scarring by classically inaccessible orbits, which is found to persist even in the presence of a moderately disordered dot potential. Our results suggest that dynamical tunneling may play a more generic role in transport through mesoscopic structures than has thus far been appreciated.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume68
Issue number2
DOIs
StatePublished - Jan 1 2003

Fingerprint

Quantum Dots
Signature
Orbit
quantum dots
signatures
orbits
Magnetoresistance
Wave Function
wave functions
Fluctuations
Numerical Simulation
simulation

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Signatures of dynamical tunneling in semiclassical quantum dots. / Ramamoorthy, A.; Akis, R.; Bird, J. P.; Maemoto, T.; Ferry, D. K.; Inoue, M.

In: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 68, No. 2, 01.01.2003.

Research output: Contribution to journalArticle

Ramamoorthy, A. ; Akis, R. ; Bird, J. P. ; Maemoto, T. ; Ferry, D. K. ; Inoue, M. / Signatures of dynamical tunneling in semiclassical quantum dots. In: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. 2003 ; Vol. 68, No. 2.
@article{750a4f8e30a1470ea016d078982f8477,
title = "Signatures of dynamical tunneling in semiclassical quantum dots",
abstract = "We study transport in large, and strongly open, quantum dots, which might typically be viewed as lying well within the semiclassical regime. The low-temperature magnetoresistance of these structures exhibits regular fluctuations, with just a small number of dominant frequency components, indicative of the presence of dynamical tunneling into regular orbits. Support for these ideas is provided by the results of numerical simulations, which reveal wave function scarring by classically inaccessible orbits, which is found to persist even in the presence of a moderately disordered dot potential. Our results suggest that dynamical tunneling may play a more generic role in transport through mesoscopic structures than has thus far been appreciated.",
author = "A. Ramamoorthy and R. Akis and Bird, {J. P.} and T. Maemoto and Ferry, {D. K.} and M. Inoue",
year = "2003",
month = "1",
day = "1",
doi = "10.1103/PhysRevE.68.026221",
language = "English (US)",
volume = "68",
journal = "Physical Review E - Statistical, Nonlinear, and Soft Matter Physics",
issn = "1539-3755",
publisher = "American Physical Society",
number = "2",

}

TY - JOUR

T1 - Signatures of dynamical tunneling in semiclassical quantum dots

AU - Ramamoorthy, A.

AU - Akis, R.

AU - Bird, J. P.

AU - Maemoto, T.

AU - Ferry, D. K.

AU - Inoue, M.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - We study transport in large, and strongly open, quantum dots, which might typically be viewed as lying well within the semiclassical regime. The low-temperature magnetoresistance of these structures exhibits regular fluctuations, with just a small number of dominant frequency components, indicative of the presence of dynamical tunneling into regular orbits. Support for these ideas is provided by the results of numerical simulations, which reveal wave function scarring by classically inaccessible orbits, which is found to persist even in the presence of a moderately disordered dot potential. Our results suggest that dynamical tunneling may play a more generic role in transport through mesoscopic structures than has thus far been appreciated.

AB - We study transport in large, and strongly open, quantum dots, which might typically be viewed as lying well within the semiclassical regime. The low-temperature magnetoresistance of these structures exhibits regular fluctuations, with just a small number of dominant frequency components, indicative of the presence of dynamical tunneling into regular orbits. Support for these ideas is provided by the results of numerical simulations, which reveal wave function scarring by classically inaccessible orbits, which is found to persist even in the presence of a moderately disordered dot potential. Our results suggest that dynamical tunneling may play a more generic role in transport through mesoscopic structures than has thus far been appreciated.

UR - http://www.scopus.com/inward/record.url?scp=85035237678&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85035237678&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.68.026221

DO - 10.1103/PhysRevE.68.026221

M3 - Article

AN - SCOPUS:85035237678

VL - 68

JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

SN - 1539-3755

IS - 2

ER -